Well... Let me tell you a story. Today I brought a new mighty mouse to compliment my MBP17. However I seem to be having a problem with it already!! And I got the bleedin thing today! It connects, the mouse buttons seem to work BUT it refuses to bloody move. At first, I thought it's the crappy mouse matt but it's not shifting that pointer on any surface!! Mooove you stupid pile of poo!!! Think it's going back! It's less than a day old too!